Hi NXP Team,
I'm using the FRDM-RW612 EVK with the wifi_cli example from the SDK. The Wi-Fi firmware loaded is rw61x_sb_wifi_a2.bin.
I have connected a Molex 1461539050 external antenna to the UFL connector (J11) on the EVK. However, I do not observe any improvement in the RSSI compared to the onboard PCB antenna. In some cases, the RSSI is even slightly lower.
From the FRDM-RW612 schematics and user guide, I understand that the RF switch (U16 - RTC7608U) selects between the onboard PCB antenna and the external UFL connector and that RF_CNTL_3 is the control signal for this switch:
RF_CNTL_3 = 0 -> PCB antenna (default)
RF_CNTL_3 = 1 -> External UFL antenna
How to control RF_CNTL_3 ?
Is RF_CNTL_3 driven automatically by the Wi-Fi firmware ? If yes what is its default value ? How to modify that value ?
Is any hardware or firmware configuration required to enable the external antenna on the EVK?
Any guidance or example code would be greatly helpful.
Thank you.
Hi,
Let me check this.
Regards,
Daniel.
Hi @DanielRuvalcaba , were you able to check this, please let me know if you have any updates regarding this.
Thanks & Regards,
Prathyush
Hi,
I've sent you a private message.
Regards,
Daniel.
I also would like to switch antenna to UFL connector (J11) on FRDM-RW612.
Could you please share information how to do it?
Are we switching antenna through Front-end module (FEM) settings?
Regards
Marcin
Hi,
I reached you via private message.
Regards,
Daniel.
Hi @Tusisima , To enable the u.FL antenna require a special calibration file, as antenna selection is controlled through this calibration data. You should reach NXP's support person to get the calibration file.
How did you fixed this?